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INVENTORIES (Tables)
6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of components of inventories
The components of inventories are as follows (in thousands):
 
June 30,
 
December 31,
 
2017
 
2016
Raw materials
$
13,626

 
$
11,742

Work-in-process
6,213

 
11,621

Finished goods
13,763

 
7,915

     Total
$
33,602

 
$
31,278